Fierceteeth is very fierce and bold and is typically hostile towards everyone, even those she has feelings towards. Like several other NightWings, she is shown to be arrogant and proud, believing in the superiority of her tribe. As shown in Prisoners, she is very cunning and ambitious. However, she does seem to have a softer side, as shown through her story about Strongwings. She has also been holding a grudge against Starflight since dragonethood due to him being raised on the mainland and being a dragonet of destiny. Even though it was not his fault, Fierceteeth treats Starflight unkindly. She has a tendency to give the blame to others. However, if her plan had worked and the dragonets of destiny were killed, she claims she would still find a way to keep him alive.
The Dragonet Prophecy
|The Dark Secret|
|Fierceteeth was among the young NightWings that Starflight met on his first night on the NightWing island. She explained that they were related through their mother, who was later confirmed to be Farsight but didn't try to interact with Starflight in any way other than wishing he was dead as she thought she would make a better Dragonet of Destiny, saying that he was weaker and younger and not fit to be a leader. When the volcano erupted, she chose to accept Glory as her new queen in order to be allowed into the Rainforest Kingdom, though it became apparent that being let into the rainforest was the only reason Fierceteeth accepted Glory as her queen when she soon kidnapped Sunny and was shown to be plotting against the RainWings.|
|The Brightest Night|
|During the confusion caused by Starflight's injury, Fierceteeth, Strongwings, and Preyhunter kidnapped Sunny. They planned to sell her to Burn, Blister, or Blaze in order to gain an army to take the Rainforest Kingdom for the NightWings. However, Sunny escaped and followed after them, even managing to steal the Obsidian Mirror from Preyhunter while the three NightWings slept, with surprising ease. To try to stall them, Sunny wrote an eerie warning on a rock. Strongwings believed it was Darkstalker, but Fierceteeth did not. Despite these setbacks, the three NightWings, with Sunny still following, made their way to the Scorpion Den, hoping to recruit a SandWing messenger. They were instead arrested by the Outclaws, and Preyhunter was killed by their leader, Thorn. They were then indefinitely locked in a jail in the Kingdom of Sand by Thorn, presumably for kidnapping her daughter.|
The Jade Mountain Prophecy
|It was mentioned by Qibli that Queen Thorn had been planning to send her and Strongwings back to Queen Glory as her prisoners.|
|While Glory, Winter, and his friends were talking, Glory told Winter that there were two prisoners she should take care of, but Thorn had agreed to hold them in her prison for now, which referred to Fierceteeth and Strongwings. In the epilogue, a NightWing dragonet, presumably Mightyclaws, thought about a secret letter he got from his friends about escaping Thorn's prison, most likely Fierceteeth and Strongwings. This theory makes sense, however, as in Moon Rising, Qibli seemed to believe they were sent to Glory, although he may have simply not been informed of Glory and Queen Thorn's agreement.|
|Talons of Power|
|Tsunami mentioned to Sunny that some prisoners had escaped from Queen Thorn's prison. This may have been Fierceteeth and Strongwings. Fierceteeth, Strongwings, Saguaro, and two unknown SandWings attempted to kill Queen Glory. Darkstalker stopped them from killing Glory and told her that he "accidentally" killed one of the SandWings, which he lied about, enchanting him to go give Vulture a message. Fierceteeth, Strongwings, Saguaro, and the other SandWing were put in the RainWings' new prison. In the morning, Darkstalker set Fireceteeth free and promoted her to a court member.|
|Darkness of Dragons|
|When Darkstalker was giving out powers to the NightWings in the Lost City of Night, Fierceteeth handed him a basket full of the silver enchanted bracelets. Qibli and Moonwatcher were dumbfounded when Darkstalker introduced them to Clearsight. However, Moon noticed that she acted differently and stated: "she has the personality of a sun-dried tomato." Suspicious, they secretly watched Darkstalker enchant Fierceteeth to act and look like Clearsight, but after many failed attempts he eventually gave up, knowing she wouldn't ever be the same dragon he loved. In the epilogue, it was stated that once again, she wanted to make herself queen of the NightWings, but the NightWings seemed to realize that it was not so much of a disaster to have a RainWing as a queen. It is unknown if she was back on trial as she hadn't paid for her crimes yet.|
|Fierceteeth was in Thorn's dungeon with Strongwings. She scribbled notes to Saguaro, a large, intimidating female SandWing guard possibly associated with a criminal named Vulture. In her first story, Fierceteeth talked about the hatching of Starflight and how much her mother would stare and hope at the egg, waiting for it to reveal the dragonet. Fierceteeth was only two then. Soon, Morrowseer came storming in and growled at Farsight to hand over the egg. Fierceteeth heard this and immediately asked Morrowseer if she could take the egg's place, but he refused and rushed off with the egg. From then on, Fierceteeth started to pretend Morrowseer was her father and followed him around, hoping to get a chance to visit the mainland, but this unfortunately never happened to her. Saguaro felt that this story was tragic, but Fierceteeth continued writing.
In her second story, Fierceteeth stated how she met Strongwings, talking about why they were a couple and how she'd never leave him. One day after class, Fierceteeth met Strongwings after he exploded one of Mastermind's experiments and got thrown out of the lab. They snuck off to the rainforest to enjoy what wasn't in their volcanic island and were subsequently caught, but when Fierceteeth got blamed Strongwings defended her and insisted that it was all his idea. Fierceteeth realized that he valued and loved her, so she decided to get into a partnership with him for the rest of their lives.In the third story, Fierceteeth explained how Pyrrhia might have ended so much better if her plans succeeded: that she handed the dragonets of destiny to Burn, and she would become the queen of the NightWings. Saguaro, persuaded by the tale and her tragic backstory, finally agreed to release Fierceteeth and Strongwings.
When Starflight's egg was still on the NightWing island, Farsight didn't care about anything but the egg, and Fierceteeth was jealous because her brother was getting all the attention.
After Starflight's egg was sent away to the mainland, Fierceteeth tried to convince Morrowseer that she is a worthy dragonet of destiny by 'accidentally' bumping into him and showing up at his lectures or bumping prey in his direction. She sometimes treated him like a father in her head. But Morrowseer did not appreciate her efforts, typically ignoring her help.
Starflight is her half-brother. She shows absolutely no concern or care for him, and there have been several times that she wished he would die. She believes that she would have made a better Dragonet of Destiny, and is jealous of his growing up off the NightWing Island. She considers him useless, and a terrible Dragonet of Destiny and NightWing. In Prisoners, she stated that although she would kill the other dragonets of destiny if her plan worked out, she would not kill Starflight because "you can't waste a NightWing," even though he betrayed their tribe. Fierceteeth hoped that someday Starflight could be "fixed."
Fierceteeth and Strongwings are in a romantic relationship. Sunny thought that they were an odd couple, for even though Strongwings was so much stronger and bulkier, he was very obedient towards Fierceteeth, allowing her to order him around. She is hostile towards him, but calls him "the only dragon I can trust in all of Pyrrhia," implying that she still cares for him. She seems to find some things he does aggravating, such as snoring too loudly.
= Possible timeline
- "Weak, […] I'd have sent him back, too."
- ― about Starflight (The Dark Secret, page 7)
- "Yes, this is the family reunion part, […] Same mother, different fathers, we assume. How do you feel? […] Ill? Very ill? Dying, perhaps?"
- ― to Starflight (The Dark Secret, page 7)
- "It's very simple. We don't like our queen. You don't like your queen. Together we eliminate them, and then our tribes can go back to ignoring each other forever."
- ― to Saguaro, in her notes (Prisoners)
- "Because it should have been me. I would have been perfect for the prophecy. I would be brilliant at saving the world. I would also have been brilliant at leading the other dragonets, proving that NightWings are the best tribe, and making sure things happened exactly as we wanted them to."
- ― Fierceteeth's message to Saguaro (Prisoners)
- "I'll take it. That'd be even better than being in the prophecy. If that RainWing can be queen, why not me? I'm bigger than her."
- ― about Glory (The Brightest Night, page 11)
- "Not too impressed with your intelligence, are they?"
- ― to Sunny (The Brightest Night, page 19)
- "It's my heart. I can put whoever I want in there."
- ― about Strongwings's relationship with her. (Prisoners)